Confirm chemical name and CAS; functionality; supply form and diluent; acid-value range and method; colour; viscosity at 25℃; water content; free acid; inhibitor type and level; ionic impurities; pack size; and TDS, SDS, COA, REACH/TSCA and transport documents.
Products with the same name or CAS may still differ in concentration, solvent or stabiliser package. Specify the active-content basis and conversion method instead of assuming equal-weight replacement.
During sampling, record lot number, opening date, storage conditions and test formula. Before production, confirm annual volume, lead time, second-source options and change-notification process.
Use: shared sample and supplier qualification checklist for procurement and R&D.
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